Speaker
Description
The SoLID Spectrometer has been designed at JLab in order to provide a high luminosity and high-acceptance device for studies of parity-violation in deep inelastic scattering (PVDIS) as well at ft the QCD structure of
the proton in the valance quark region. The program is complementary to that of the EIC, whichfocusses more on the lower Bjorken $x$ region. The PVDIS studies will measure the vector-electron and axial quark current, described by the coupling constants $C_2{u}$ and $C_{2d}$. Since these are small
in the Standard Model, a precision measurement provides a good test of BMS physics. Deep inelastic scattering is the only reaction for which the radiative corrections cam be precisely determined.In addition, the method provides a unique way to measure hadron physics at large Bjorken $x$. Charge symmetry violation can be isolated with a deuterium target and an isovector EMC effect can be studies in a neutron-rich nucleus such as $^{48}$Ca. In addition, quark-quark correlations can be isolated in hight-twist effects. With a proton target, the $d/u$ PDF ratio can be measured directly without making corrections for nuclear targets.
